Question

我有7张那样的表

诊所

  clinic_id     clinic_name    emailId              address

诊所和护士桌之间的一对一映射

护士

  nurse_id  nurse_name  nurse_emailid      clinic_id

医生

    doctor_id    doctor_name   doctor_email

诊所和医生之间的多对多映射

Doctor_clinic

    doctor_clinic_id  doctor_id   clinic_id

患者

   pattient_id   patient_name     address

patinet和doctor_clinic之间的多对多映射

Doctor_clinic_patient

    patient_dotor_id   doctor_clinic_id  patient_id

doctor_clinic_patient和doctor_patient_appointment之间的一对多映射

Doctor_patient_appointment

     appointment_id  appointment_time  appointment_status patient_doctor_id

appointment_status有三个值 - ＆＃39;待定＆＃39;＆＃39;已取消＆＃39;已完成＆＃39;

所以，Senario从这里开始

从nurse_id（护士表）中选择clinic_id
然后在clin_id的基础上，我想选择doctor_clinic_id（doctor_clinic表）
然后根据doctor_clinic_id，我想选择patient_id
然后在patient_id的基础上，我想从患者表中选择患者详细信息

问题在于，我只想从患者表中选择那些在状态预约表中预约的患者＆＃39;

我做了以下查询，哪个工作正常，从db获取患者行。但是我想根据预约状态过滤此患者结果

查询

  Select * from patient where patient.patient_id in 

 (select doctor_patient.patient_id from doctor_patient where 

 doctor_patient.doctor_clinic_id in
 (select doctor_clinic.doctor_clinic_id from doctor_clinic where  

 doctor_clinic.clinic_id  in 
 (select nurse.clinic_id from nurse where nurse_id = 6) ))

Answer 1

我想多个JOIN可以在这里工作：

SELECT patients.* FROM patients JOIN (
  SELECT DISTINCT(p.patient_id) as pat_id FROM clinic c 
  JOIN doctor_clinic dc ON c.clinic_id = dc.clinic_id
  JOIN doctor_clinic_patient dcp ON dcp.doctor_clinic_id = dc.doctor_clinic_id
  JOIN patient p ON p.patient_id = dcp.patient_id
  JOIN doctor_patient_appointment dpa ON dcp.patient_doctor_id = dpa.patient_doctor_id
  WHERE dpa.status = 'pending'
) tmp ON tmp.pat_id = patients.patient_id

根据表-2列值过滤表-1的行，表-1和表-2

1 个答案: